How to Role Play a Lawful Good Character in a Dungeons and Dragons Campaign

Act as an over-the-top and stylized version of goodness that could never exist in a real world that contains moral shades of gray. Never make compromises, act against your convictions or be willing to work with evil characters in any way.

Obey the law and any local customs, even when it hinders your ability to complete tasks or causes you unnecessary hardship. If there is not enough evidence to prove that someone committed a murder, you would never take justice into your own hands and punish them anyway but would instead take the extra time to find the evidence, even if it means letting the murderer strike again.

Be completely selfless at all times, unless doing so would actually work against the party's best interests. If both you and another character are wounded, always offer the other character the first access to healing magic. However, if it would make more sense for your character to be at full health for an upcoming battle, you would not be breaking the bounds of your alignment to make the case that you should receive the healing instead.

Never tell a lie, and never break a promise. Your code of honor is too strong for you to break, even if it makes your life harder. You should not even lie to an evil enemy who has made it clear he intends you harm, for to do so would put you on the enemy's level.

Avoid sneaky or underhanded tactics, even against enemies who would have no compunctions about using them against you. This avoidance should even extend to combat, precluding you from making extensive use of ambushes or taking advantage of objects such as poisoned arrows.

Always take the most good course of action available in every situation. You should freely give alms to the poor, even when low on funds yourself, and always take immediate action when you see evil being committed. A truly lawful good character would probably even take time out of her current quest to find out why a city has a large population of beggars and work to improve the conditions there so that others need not give of their resources.

Attack evil head on and always fight it to the death. You would rather die fighting evil honorably than run away and allow evil to continue to flourish. The only time you would never immediately draw your weapon and attack an evil enemy is if it would be outside the bounds of the law to do so.